Originally Posted by tesseract
You can… to a certain extent. Most strength athletes cut for competitions and most are also not natural.
I am not saying that maintaining your weight is as good for strength as gaining weight. Obviously you will get even stronger if you gain weight.
I am just sceptical of the fact that people below the advanced level need to gain weight in order to get stronger. Perhaps gaining weight is still ideal in most cases, as the beginner/intermediate can pack on more quality size in a given time frame than an advanced lifter, but if weight gain is not an option (for whatever reason) I still believe you can make decent progress in terms of muscle and strength gains at the same bodyweight.
Enhanced competitive strength athletes are not representative of the population at large. For every elite enhanced lifter there are tons of lifters that are natural, although not necessarily on the same relative level. They can also get stronger without gaining much weight.